ec-42 - 1 It is E370 Time Announcements WarmUps Questions...

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1 February 20, 2009 It is E370 Time!!! Announcements WarmUps Questions Today’s Goals: You should be able to T write a function of a combination of other random variables. T evaluate the expected values of combinations of random variables. T determine how to include the covariance term in the variance formula in a combination. T predict and demonstrate the effect of covariances on the variance. T evaluate a portfolio's expected value and risk. Next Time~~Well-known discrete RVs Announcements T Please be sure to bring a picture ID to the exam this evening. T Exams turned in without a picture ID will not be graded and will not be awarded the extra credit point for correctly filling out the scantron. T Left-handed students, please inform the proctor as you enter the exam room that you would like a left-handed desk. Expected Number of Dips per Ice Cream Cone X / # of dips per cone # sold f i /n or P(X) X*P(X) 11 9 0 2 245 36 5 Total 500 Let’s write down how we did that using summation notation. Start on the inside then work out.
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ec-42 - 1 It is E370 Time Announcements WarmUps Questions...

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